Vapor burner



Patented May 2, H24.

CLYDE W. MUMMERY, O'F RICHMOND, MICHIGAN.

VAPOR BURNER.

Application filed January 29, 1923. Serial No. 815,695.

To all whom it may concern:

Be it known that I, CLYDE W. MUMMERY, a citizen of the United States, residing at Richmond. in the county of Macomb and State of Michigan, have invented certain new and useful Improvements in Vapor Burners, of which the following is a specification.

This invention relates to vapor burners, in which the vapor is generated from oil such as kerosene, mixed with air, and consumed in the burner, which latter is of the double perforated tube or wickless type.

The object of the invention is to improve the means for generating the vapor from oil.

A further object of the invention is to improve the combustion tube structure and to provide novel means for introducing air into the combustion space.

Further improvements and details will appear from the following description.

One form of the invention is illustrated in the accompanying drawings in which Fig. 1 is a vertical section of the burner. Fig. 2 is a section on the line 2-2 of Fig. 1.

The base casting or plate of the burner has an annular trough 1 at the bottom of the combustion space, and a hole 20 at the center to admit air to the inner tube of the burner. An inner perforated tube 2 stands on a seat 21 at the inner edge of the trough, and an outer perforated tube 3 rests on a seat 22 at the outer edge of said trough, these tubes forming between them an annular combustion space to which vapor is supplied from the trough and air is supplied thru the holes in the tubes.

The innertube is provided on its inside with a succession of ring flanges 9, made of sheet metal, and pressed into grooves or beads 23 formed in the wall of the tube. These flanges are spaced one above the other, and are dished or inclined downwardly toward the center, so that they act as deflectors or bellies to direct the flow of air rising in the tube thru the holes in the latter and into the combustion space. The flanges progressively decrease in width from the lower to the upper flange whereby the greater amount of air will be deflected thru the holes in the lower part of tube 2, which is advantageous in increasing combustion in the lower part of the combustion space.

The other tube 3 is also provided on its outer side with a succession of downwardly projecting flanges or deflectors 30 which similarly tend to direct air thru holes in the tube 3 and into the combustion space. These flanges 30 may be welded or otherwise secured to the outside of the tube.

The burner tubes are surrounded by an outer cylindrical shell 4 which has a number of inwardly projecting lugs 11, resting on the outer edge of the base, as shown at 24, to support the shell in position. The shell is flared outwardly at the bottom and bent inwardly at the top.

The outer shell 3 is flared outwardly at the top, as shown at 25. The inner shell 2 is closed at the top, as indicated at 25, except a hole 26 to prevent excessive compression, and below the head 25 it has a cross plate or partition 27, perforated as shown, and forming with the head 25 a hot air chamber in the top of the inner tube, from which the air may escape directly to the flame at the top of the combustion space thru the holes in the wall of the tube 2. Studs 10 project inwardly from the tube 3 -to center the tube 2 therein, and either or both tubes may be readily lifted off of the base and out of the shell. The trough 1 has a depending lug 28 whereby it may be attached to a supporting brag.

For supplying oil, a pipe connection 29 is shown to a valve casing 7 which leads thru an air and gas mixer 6 into a standing tube or vaporizing pipe 5, the lower end of which is connected by a fitting 32 tapped into the side of the trough 1, and the upper end of which is offset thru an opening in the shell a for connection to the mixer. A priming funnel 8 is also connected to the mixer. The tube 5 stands beside and against the burner tube 3 and is consequently heated by conduction therefrom, and is long or high enough to form. a retort for the generation of the mixed oil and air into a vapor or fixed gas which flows from the tube 5 into the trough 1 and thence upwardl between the perforated tubes 2 and 3 w ere it is mixed with air and consumed, the heat imparted to the tube 3 acting to heat the tube 5 and continue the generation. The burner. may be started by pouring gasoline or the like into the primer 8 from which it will run do into the trough 1 and be lighted to heat the adjacent parts and start the vaporization, and the heat supplied to the tube will be found sufiicient to enable the oil to be turned on full, at once, without the 5 delay incidental to a cold connection to the burner trough or chamber. The flanges 9 and 30, for increasing the supply of air to the combustion chamber, will also be found very advantageous in assisting combustion 10 and giving a blue flame without smoke.

I claim:

1. A burner comprising a base trough, inner and outer perforated tubes standing thereon with a combustion space therebetween above the trough, and a fuel supply pipe standing beside the outer tube and leading to the trough.

2. A burner as set forth in claim 1, the suppl pipe being in contact with the outer tube or vaporization of the fuel.

3. A burner as set forth in claim 1, the upright supply pipe forming a vaporiser and a mixer connected to the upper end 0 the supply tube.

In testimony whereof, I afiix my signature in presence of two witnesses.

CLYDE W. MUMMERY.

Witnesses ELLEN OGDEN, DAVID CARL. 

